Cost and outcome of behavioural activation versus cognitive behavioural therapy for depression (COBRA): a qualitative process evaluation.
Katie FinningDavid A RichardsLucy MooreDavid EkersDean McMillanPaul A FarrandHeather A O'MahenEdward R WatkinsKim A WrightEmily FletcherShelley RhodesRebecca WoodhouseFaye WrayPublished in: BMJ open (2017)
ISRCTN27473954, 09/12/2011.